Yes, they mean the same thing in general. The only possible contradiction to this that I can think of would be, for example, that your wife works as a salewoman who spends most of her day out of the office with her clients. If that were the case, the second sentence would mean she's using your home as her office for the day but that she's actually spending most of her time out of the house. In that case, the first sentence wouldn't be completely accurate, as it implies her work is done inside the house.

This convenience store often get ninety cents discount for every one hundred dollar at Tuesday.
We can often getting ninety cents discount for every one hundred dollar at Tuesday in this convenience store.
this two sencences is correct?

I'm afraid we can't offer a service checking sentences for our users - if we tried to do this then we would have no time for anything else! Our role here is to help with the material on our pages, not to correct or check sentences when needed.